page_title: Jewel Changi Airport
section_title: The Rain Vortex
hierarchical_section_title: Jewel Changi Airport / Attractions / The Rain Vortex
caption_attribution_description: English: HSBC Rain Vortex inside the "Jewel" area at Changi Airport (SIN). SkyTrain connecting Terminal 2 and 3 is visible in the photo. Italiano: HSBC Rain Vortex dentro l'area "Jewel" presso l'aeroporto di Singapore Changi (SIN). Nella foto è visibile lo SkyTrain le collega il Terminal 2 e il Terminal 3.
context_page_description: Jewel Changi Airport is a nature-themed entertainment and retail complex on the landside of Changi Airport, Singapore, linked to three of its passenger terminals. Its centrepiece is the world's tallest indoor waterfall, the Rain Vortex, which is surrounded by a terraced forest setting.
  Jewel includes gardens, attractions, a hotel, aviation facilities and more than 300 retail and dining facilities. It covers a total gross floor area of 135,700 m², spanning 10 storeys – five above-ground and five basement levels. Its attractions include the Shiseido Forest Valley, an indoor garden spanning five storeys, and the Canopy Park at the topmost level, featuring gardens and leisure facilities.
  Jewel receives about 300,000 visitors a day. In October 2019, six months after its soft opening, it had already welcomed 50 million visitors, exceeding its initial target for the whole of the first year. The complex and airport is located in Changi, at the eastern end of Singapore, approximately 20 km northeast from Singapore's Downtown Core.
context_section_description: The Rain Vortex, sponsored as the HSBC Rain Vortex, it is the world's largest and tallest indoor waterfall, standing at 40 metres (130 ft) high. Recirculating rain water is pumped to the roof to free fall through a round hole at up to 37,850 liters (8,330 imp gal; 10,000 U.S. gal) per minute to a basement-level pool. An acrylic funnel at the bottom prevents splashing and insulates the sound of the cascade. The toroid-shaped roof has more than 9,000 pieces of glass spanning 200 by 150 meters with a sloped oculus as the mouth of the waterfall acting as "a continuation of the building...completed in a liquid form." At night, the circular walls of the waterfall becomes a 360-degree stage for a light-and-sound show.
  To prevent excess humidity in the Jewel, the waterfall's flow alternates between cascades and trickles that reduce air turbulence. The design process by WET Design engineers included testing an on-fifth-scale model and a full-size partial prototype.
  The Changi Airport Skytrain connecting the terminals passes above ground near the waterfall, allowing passengers remaining airside to see the Vortex and Jewel itself.
caption: The Rain Vortex
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